Megaphones How To Deal With Noise?

Megaphones how to deal with noise?

Life Megaphones in many areas of application is very broad, aunt who used
it to jump square dance, the teacher used it to class, promoters use it to
attract customers. But the noise of the Megaphones has been the people to avoid.
What noise does the Megaphones do?

1, if there Zizi sound, this noise is usually due to microphone cable and
audio cable shielding caused by poor, should use a good shield microphone
line.

2, the Megaphones appears to communicate hum, which is caused by
electromagnetic leakage near the amplifier.

3, the display line frequency crosstalk, it is the display line frequency
signal directly through the display cable to the graphics card, to the
motherboard and then into the sound card. Through the microphone away from the
monitor can not be resolved. This problem is easy to appear in some
anti-interference ability of the sound card. According to the investigation
onboard sound card is not easy to this problem. Solution Only temporarily turn
off the monitor power during recording.

Megaphones noise is very ugly, the correct treatment can reduce the burden
on the ears.